Alice to Bob - I'm Alice, {[T, Kslalice}Bob Bob to Alice - {[T +1, Ks]Bob}Alice Where Tis the Timestamp, Ks is the session Key. {...} is encryption with specified PUBLIC key. [...] is encryption with specified PRIVATE key. Which of these sentences is correct? O The protocol doesn't ensure Mutual Authentication but ensures safe Session Key. O The protocol ensures Mutual Authentication and safe Session Key. O The protocol ensures Mutual Authentication and unsafe Session Key